Hi Simon, Just use set yflip on http://www.iges.org/grads/gadoc/gradcomdsetyflip.html cheers sara > Hi, > I have wind data defined at sigma coordinate levels from 1 to .1. > So, when I draw vertical cross-sections the top level winds are > givel in the bottom part of the graph. Is there a way to invert the axes? > > Simon > > S.O. Krichak